Smoke-fuel attachment



H. CARMICHAEL; SMOKE FUEL ATTACHMENT. APPLICATION FILED gov. 26, 1920.

Patented May 23, 1922.

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.zrarrnsl HrEAItMIGHAEM or ename FALLS, wasnrne'ron.

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Application.fiIedNovember erm? serial No. 426,440.

and useful Improvements in Smoke-Fuel Attachments; and I do hereby declare the following to be afull, clear, and exact deing of the fuel scription of the invention, such as will enable others skilled in the art to which it appertains to make and usethe same.

This invention relates to attachments adapted to be applied to heating stoves and it consists in the novel features hereinafter described and claimed.

Anobject of the invention. is to provide an attachment of simple form adapted to be applied to the smokepipe "of a heating stove at the rear side of the stove and which ls deslgnedto conduct air heated by contact with the rear side of the stove into the smoke pipe at a point just above the smoke and gas outlet of the stove body. Consequently the heat and gases rising from the tire or embers in the stove are held back in the body of the stove until the fuel is completely consumed and the heat; passes through the side ofthe stove and hence the greater amount of the heat unit is liberated in the room adjacent the stove in consequence of the burn- In the accompanying drawing:

Figure 1 is a side view of a stove with the attachment applied.

Figure 2 is a vertical sectional view of.

the attachment. i

1 Figure 3 is a detail side elevation of the hood looking toward the inner surface.

As illustrated in the accompanying drawing the stove 1 is of usual form adapted to burn wood as a fuel and is sometimes known as an air-tight heat stove. The stove body 1 is provided at'its top side with a collar 2 which is usuallyreceived in the stove pipe.

In the present instance andwhen the invent-ion is applied. the stove pipe or smoke pipe 3 is not connected directly with the collar 2 but is connected with the attachment about to be described and said attachment is connected with the collar. The attach-- ment comprises a pipe section 4: one end of l which is placed around thecollar 2 and the other end receive the smoke pipe 3. The pipe 4: is provided at its rear side and at a point between its ends with a nipple 5. Ahood 6 is connected at its upper end with the outer end of the nipple 5 and extends down along the rear side of the stove body 1 and is open at its lower end. a The side edges of the hood 6 converge toward each other from the lower edge of the hood to the point of attachment where the hood joins with the nipple 5 and the edges of the hood bear directly against the rear side of the stove body 1 and intermediate portion of the hood is spaced therefrom.

Consequently when a fire is started in the stove body 1 and the attachment is applied as hereinbefore described air from the eX- terior passes up along the rear side of the stove body 1 and between the rear side of the stove body and the intermediate por tion of the hood 6. This air is heated and passes up the nipple 5 and enters the pipe 4% at a point between the ends thereof and comes in contact with the gases and flame from the fuel which is being burned in the stove body 1. This heated air is ignited in the pipe 4 inasmuch as an additional supply of fresh oxygen is brought in contact with the heated gases and flame and the products and out through the fiuein the usual man ner and the combustion which occurs in the pipe 4'. additionallyheats the pipe ft and smoke pipe 3. At the same time the gases from the fuel in the body 1 areheld back and circulate around inthe body 1 and pass through the fuel and are reignited which results in a complete consumption of the fuel and. the heat therefrom passes through the sides of the body 1 and radiates it to the room or compartment in which the stove is located. Therefore it will be seen that by using a minimum quantity of fuel a maximum amount of heat units may be extracted from the same and liberated in thevicinity of the stove Having thus described my invention, what is claimed is 1. A ventilating attachment for a stove of combustion pass up through the pipe 3 consisting of a casing formed with a back and two side v flanges and adapted to fit against one end of the stove to serve as an air assa 'ewa the u er end of said casin b 7 25 an upwardly extending collar, of a ventilatpipe section, and the upper end of the elbow J0 ing attachment consisting of a casing formed telescopically engaging said nipple.

I with a back and two substantially vertical In testimony whereof I nflix my signature side flanges adapted to fit against one end of in presence of two witnesses. the stove to serve as an a1r passageway, the

7 upper end of said casing having an elbow JAMES OARMICHAEL' projecting above the top of the stove, a pipe Witnesses: section in telescopic relation with said (:01- T. B. PECK, lar, a laterally extending nipple on said HENRY BOSHART. 

